I connected my D3 to my hotel's television this morning, and got sound, but no video. I connected red, white and yellow to the AV1 (and changed the Input source on the television to AV1) input jacks, but got no picture.

Has anyone seen this problem? Is there a setting on the D3 that I need to select? I checked the manual online, and there are no instructions for this, so I assume it's fairly simple ...

This particular television has both HDMI and USB ports as well - I didn't bring my HDMI cord, but do have the USB - would that work (I didn't have time this morning to try it) ?

Didn't know the D3 worked with composite out. HDMI out only. Did you use a cable from the dock port or the headphone jack? I'm guessing headphone jack as that would explain why you had audio but no video. Most L/R/V cables still have the audio rings in the same place as simple L/R cables.

Once in the video app, tap the menu icon on the border. Center icon.
Settings is the bottom right option you should see.
Once in settings, scroll the screen down until you see AV Out. Tap on it. Pick Composite.